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Criteria ranges from 10 to 15 cm (3.9 to 5.9 in) in a 12-hour period, with local exceptions for southwestern British Columbia (5 cm (2.0 in) in a 6-hour period) and Haines Skagway roads in British Columbia/Yukon (20 cm (7.9 in) in a 24-hour period). Snow Squall Watch – There are two types of snow squalls of which alerts are issued for:
Environment Canada meteorologists issued the first snowfall warnings of the season along the British Columbia – Yukon border where 20 cm (7.9 in) of snow was forecast. [31] Highway 1 was closed over Rogers Pass east of Revelstoke because of a vehicle crash in the wintry conditions.
The heavy snowfall tends to muffle the sound of the thunder so that it sounds more like a low rumble than the loud, sharp bang that is heard during regular thunderstorms. [ 2 ] Thundersnow can occur during a normal snowstorm that sustains strong vertical mixing which allows for favorable conditions for lightning and thunder to occur.
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A winter weather advisory is issued when snow, blowing snow, ice, sleet, or a combination of these wintry elements is expected, but conditions should not be hazardous enough to meet warning ...
The Met Office yellow weather warning for snow and ice covers the county from midday on Saturday until midnight on Sunday. Overnight temperatures on Friday are expected to reach lows of -4C ...
A lake effect snow warning is a bulletin issued by the National Weather Service in the United States to warn of heavy snowfall accumulations that are imminent from convective snow generated by very cold airmass passing over unfrozen lakes (lake effect snow). The criteria for amounts may vary significantly over different county warning areas. [1]
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